It’s a rare view indeed, considering that the central section of blast furnace 9 located in Duisburg-Hamborn is normally heated to a blistering 1,600 degrees Celsius. However, after 25 years of operation, the furnace had to be powered down for 180 days to replace the lining, which is two meters thick. The project involved the installation of 2,400 metric tons of refractory material: 1,900 metric tons for the hearth and 500 metric tons for the shaft section.
ThyssenKrupp Steel Europe invested 38 million euros in this modernization project. If you want to take a peek into blast furnace 9, you will need a lot of patience. Now that it has been fired up again, it will be operating for several decades without interruption.